Process of manufacturing compo-board.



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.81 COMING 0R PLAST'C CrossReference Examiner Fg F- Y, Y. Y 1-1 Y ,d Y ,X G. W.BBADLB.

` PRQGBSS OF MANUFACTURING COMP() BOARD.

APPLIOATIOI FILED 00T. 24, 1911.

1,125,445, Patented Jan, 19, 1915.

mvmron Genf/Eem www M r Ano/Mfrs *HE MORRIS PEJERS Ca PHOY' fr 'o.. WASHINGTON. n. C.

z 'Be -it lmownA that Bayonne, in-the county v-of Hudson and Stateo'jevr"Jersey, hare iin-vented certain new and useful Improvements inProcesses of Manufacturing Gom oBoard; 'an d.I do hereby declare the 'following to be a. full, clear, and exact description of the invention,such as willen-able others skilled in'the art to which it appertains to make and -usezy the same.

This invention relates to a .process for manufacturing the material known as compo board, and has for its object to produce compo board in a quick and comparatively inexpensive manner.

To these ends the invention consists in the novel steps constituting my process, as

v will be more fully hereinafter described and cate, throng particularly pointed out in the claims.

Referring to the accompanying drawings formingapart of this specification in which like numerals designate like parts in all the Vviexvsz--Figure 1 is a diagrammatic View of a machine suitable for carrying out my improved process; and, Pig. 2 is a detail perspective view of a piece of compo board made by my process.

1 indicates the hopper of any suitable Wood cutting machine for receiving the stpgLducts from a mill such as small n )s of wood or shavinvs 3, and which are adapted to Be fed by a Ieed screw 4 to and same from any suitable source of power.

A tank 9 is connected to the discharge' end of the cutting machine and is adapted to receive the saw dust therefrom. This tank has mounted therein in suitableibearinUs a shaft 10 on the central part of which is Inounted agitators 11 for thoroughly mining up the saw dust with a solution ofsl ate so Vwhich is fed in proper propor 1 s rom tie tank 12 by the cock or regulator 13. The lower part of the tank 9 is cone shaped and has mounted therein on the lower part of the shaft 10, a feed screw 14, which screw v,forces the saw dust, thoroughly saturated with the sodium silit I, GEORGE a.'

citizen ofthe United States, residing aft l from any suitable source of power, passing h the discharge end or spout 154K NEW shaftyll) carrying the lagitator l1. and feed screw l, vis revolved by the belt 17 `driven over the pulley 18.y The sheet or ribbon 16 i i sei-.estar .i

DFQLEW 'Yeni .semen-ariela er of, saw .dust saturated with the sodium :siliafter it leaves the discharge spout 15,

cate,

ofthe feed rolls 23 and 24, fed

is by means between tivo sheetsgof a er 19 and :20 car- -ried by-the'rolls 2 l and 42:2.o forma .com-

positezsheet. From the feed rolls the composite sheet of paper with the wood and silicate filler between, is then passed between the two heated rolls 25 and Q6 Where the whole is firmly pressed together under the influence of heat and formed into compo board.

@-28 and 29 indicate gas pipes for heating the pressure rolls 25 and 526 and keeping them at the` proper temperature.

The feed rolls 23 and 24 together with the heated pressure rolls 25 and 26 are revolved in the direction of the arrows by the belts 2 and pulleys 30, as shown.

Heretofore compo board has been made up of strips of Wood glued together and then these strips were glued between sheets of paper board. -Not only are these strips more or less expensive in themselves, but they have to all be'of uniform thickness and Width, which entails additional expense on account of the cost of the labor and attention necessary to their production. By this invention, on the other hand, it will be seen that'all the waste products of a mill, such as shavings, chip, and saw dust, may be utilized and that a compo board may be made at once in a simple and cheap manner without the necessary time and attention that has been heretofore required.

It is obvious that those skilled in the art may vary the details of my process without departing from the spirit thereof, and therefore I do not wish to be limited to the above disclosure except as may be required by the claims.

lVhat I claim isz- 1. The process of producing compohboard in a continuous operation, Which consists'in finely dividing -ajillingmaterialg stirring said finely divided material with a suitable binder in a vrStickyior-m; forming the mixed binder and'material into a sheetgefeeding sheets of other material oneach sidevof said 1.first mentioned sheet while the latter is still A 1 "ww-ll SstsV in finely. dividing. ,'v'roody`A4 material;

stirring silicate of sodium in a liquid form into said material to serve as 'a binder; forming the 'said wood and sodium -silicate into Ia .pliable sticky sheet; feeding sheets of paperon each side of said formed sheet nhile'the 4latter is still sticky to constitute a composite sheet; and finally sub# jecting -said composite sheet to Yheat and pressure to dry and 'bind the parts together, substantially as described. f

,'3.".'.l`he processA of producing a compo `sticky sheet; feeding a sheet of paper to 4 'Leach-sideof said rst mentionedsheet While the latterl is in motion and still sticky to 'I 4form a composite sheet; and subjecting said composite sheet first to pressure and then to heat and pressure to frrmly bind all the lparts together, substantially as described. fIn testimony whereof, I aix my 'signature, presence of two witnesses.'

Y GEORGE YV. ABRADLE. ",Witne'sss:

2LH'. GEWECKE', "IL-FL DODGIN.

Copies ofths patent may be obtained for vecents eacliylby addressing the Commissioner of Patents, v a 4 WashngtonQ'DiC. j 

